A comparison was made between the bottom gating system, middle level gating system, and step gating system.
对底注、中注及阶梯注三种浇注系统进行对比。
In this paper, water has been used to simulate the bottom-sides gating system of the large hydro-turbine blades by means of high-speed and continuous photographic techniques.
采用高速摄影、连续拍照等技术手段，对大型水轮机叶片底侧式浇注系统的充型过程进行了水力模拟研究。
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